1-wire driver based on U[S]ART in single-wire, half-duplex mode.
This commit is contained in:
Aleksandr Vyhovanec
Gregory Nutt
parent
d58e4acf17
commit
9a2002a302
1333
arch/arm/src/stm32/stm32_1wire.c
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1333
arch/arm/src/stm32/stm32_1wire.c
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113
arch/arm/src/stm32/stm32_1wire.h
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113
arch/arm/src/stm32/stm32_1wire.h
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/************************************************************************************
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* arch/arm/src/stm32/stm32_1wire.h
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*
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* Copyright (C) 2016 Aleksandr Vyhovanec. All rights reserved.
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* Author: Aleksandr Vyhovanec <www.desh@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_STM32_STM32_1WIRE_H
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#define __ARCH_ARM_SRC_STM32_STM32_1WIRE_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include "chip.h"
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#if defined(CONFIG_STM32_STM32L15XX)
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# include "chip/stm32l15xxx_uart.h"
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#elif defined(CONFIG_STM32_STM32F10XX)
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# include "chip/stm32f10xxx_uart.h"
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#elif defined(CONFIG_STM32_STM32F20XX)
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# include "chip/stm32f20xxx_uart.h"
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#elif defined(CONFIG_STM32_STM32F30XX) || defined(CONFIG_STM32_STM32F37XX)
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# include "chip/stm32f30xxx_uart.h"
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#elif defined(CONFIG_STM32_STM32F40XX)
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# include "chip/stm32f40xxx_uart.h"
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#else
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# error "Unsupported STM32 UART"
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#endif
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Check 1-Wire and U(S)ART conflicting */
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#if defined(CONFIG_STM32_1WIRE1) && defined(CONFIG_STM32_USART1)
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# undef CONFIG_STM32_1WIRE1
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#endif
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#if defined(CONFIG_STM32_1WIRE2) && defined(CONFIG_STM32_USART2)
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# undef CONFIG_STM32_1WIRE2
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#endif
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#if defined(CONFIG_STM32_1WIRE3) && defined(CONFIG_STM32_USART3)
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# undef CONFIG_STM32_1WIRE3
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#endif
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#if defined(CONFIG_STM32_1WIRE4) && defined(CONFIG_STM32_UART4)
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# undef CONFIG_STM32_1WIRE4
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#endif
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#if defined(CONFIG_STM32_1WIRE5) && defined(CONFIG_STM32_UART5)
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# undef CONFIG_STM32_1WIRE5
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#endif
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#if defined(CONFIG_STM32_1WIRE6) && defined(CONFIG_STM32_USART6)
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# undef CONFIG_STM32_1WIRE6
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#endif
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#if defined(CONFIG_STM32_1WIRE7) && defined(CONFIG_STM32_UART7)
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# undef CONFIG_STM32_1WIRE7
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#endif
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#if defined(CONFIG_STM32_1WIRE8) && defined(CONFIG_STM32_UART8)
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# undef CONFIG_STM32_1WIRE8
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#endif
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/* Is there a 1-Wire enabled? */
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#if defined(CONFIG_STM32_1WIRE1) || defined(CONFIG_STM32_1WIRE2) || \
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defined(CONFIG_STM32_1WIRE3) || defined(CONFIG_STM32_1WIRE4) || \
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defined(CONFIG_STM32_1WIRE5) || defined(CONFIG_STM32_1WIRE6) || \
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defined(CONFIG_STM32_1WIRE7) || defined(CONFIG_STM32_1WIRE8)
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# define HAVE_1WIRE 1
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#endif
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Public Data
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#endif /* __ARCH_ARM_SRC_STM32_STM32_1WIRE_H */
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215
include/nuttx/1wire.h
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215
include/nuttx/1wire.h
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/****************************************************************************
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* include/nuttx/1wire.h
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*
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* Copyright (C) 2016 Aleksandr Vyhovanec. All rights reserved.
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* Author: Aleksandr Vyhovanec <www.desh@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_1WIRE_H
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#define __INCLUDE_NUTTX_1WIRE_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Name: ONEWIRE_RESET
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*
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* Description:
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* Reset pulse and presence detect. Each write operational will be an 'atomic'
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* operation in the sense that any other 1-Wire actions will be serialized
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* and pend until this write completes.
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*
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* Input Parameters:
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* dev - Device-specific state data
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*
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* Returned Value:
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* 0: success, <0: A negated errno
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*
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****************************************************************************/
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#define ONEWIRE_RESET(d) ((d)->ops->reset(d))
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/****************************************************************************
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* Name: ONEWIRE_WRITE
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*
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* Description:
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* Send a block of data on 1-Wire. Each write operational will be an 'atomic'
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* operation in the sense that any other 1-Wire actions will be serialized
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* and pend until this write completes.
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*
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* Input Parameters:
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* dev - Device-specific state data
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* buffer - A pointer to the read-only buffer of data to be written to device
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* buflen - The number of bytes to send from the buffer
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*
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* Returned Value:
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* 0: success, <0: A negated errno
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*
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****************************************************************************/
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#define ONEWIRE_WRITE(d,b,l) ((d)->ops->write(d,b,l))
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/****************************************************************************
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* Name: ONEWIRE_READ
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*
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* Description:
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* Receive a block of data from 1-Wire. Each read operational will be an 'atomic'
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* operation in the sense that any other 1-Wire actions will be serialized
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* and pend until this read completes.
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*
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* Input Parameters:
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* dev - Device-specific state data
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* buffer - A pointer to a buffer of data to receive the data from the device
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* buflen - The requested number of bytes to be read
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*
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* Returned Value:
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* 0: success, <0: A negated errno
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*
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****************************************************************************/
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#define ONEWIRE_READ(d,b,l) ((d)->ops->read(d,b,l))
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/****************************************************************************
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* Name: ONEWIRE_EXCHANGE
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*
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* Description:
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* Reset pulse and presence detect, send a block of data and receive a block
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* of data from 1-Wir. Each write operational will be an 'atomic'
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* operation in the sense that any other 1-Wire actions will be serialized
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* and pend until this write completes.
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*
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* Input Parameters:
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* dev - Device-specific state data
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* reset - Reset pulse and presence detect
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* txbuffer - A pointer to the read-only buffer of data to be written to device
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* txbuflen - The number of bytes to send from the buffer
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* rxbuffer - A pointer to a buffer of data to receive the data from the device
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* rxbuflen - The requested number of bytes to be read
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*
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* Returned Value:
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* 0: success, <0: A negated errno
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*
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****************************************************************************/
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#define ONEWIRE_EXCHANGE(d,r,tx,tl,rx,rl) ((d)->ops->exchange(d,r,tx,tl,rx,rl))
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* The 1-Wire vtable */
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struct onewire_dev_s;
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struct onewire_ops_s
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{
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int (*reset)(FAR struct onewire_dev_s *dev);
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int (*write)(FAR struct onewire_dev_s *dev, FAR const uint8_t *buffer,
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int buflen);
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int (*read)(FAR struct onewire_dev_s *dev, FAR uint8_t *buffer,
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int buflen);
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int (*exchange)(FAR struct onewire_dev_s *dev, bool reset,
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FAR const uint8_t *txbuffer, int txbuflen,
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FAR uint8_t *rxbuffer, int rxbuflen);
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};
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/* 1-Wire private data. This structure only defines the initial fields of the
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* structure visible to the 1-Wire client. The specific implementation may
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* add additional, device specific fields after the vtable.
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*/
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struct onewire_dev_s
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{
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const struct onewire_ops_s *ops; /* 1-Wire vtable */
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: up_1wireinitialize
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*
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* Description:
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* Initialize the selected 1-Wire port. And return a unique instance of struct
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* struct onewire_dev_s. This function may be called to obtain multiple
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* instances of the interface, each of which may be set up with a
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* different frequency and slave address.
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*
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* Input Parameter:
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* Port number (for hardware that has multiple 1-Wire interfaces)
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*
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* Returned Value:
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* Valid 1-Wire device structure reference on succcess; a NULL on failure
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*
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****************************************************************************/
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FAR struct onewire_dev_s *up_1wireinitialize(int port);
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/****************************************************************************
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* Name: up_1wireuninitialize
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*
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* Description:
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* De-initialize the selected 1-Wire port, and power down the device.
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*
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* Input Parameter:
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* Device structure as returned by the up_1wireinitialize()
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*
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* Returned Value:
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* OK on success, ERROR when internal reference count mismatch or dev
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* points to invalid hardware device.
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*
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****************************************************************************/
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int up_1wireuninitialize(FAR struct onewire_dev_s *dev);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_NUTTX_1WIRE_H */
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